<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
	</head>
	<body>
		<div id="app">
			<h2>{{message}}</h2>
			<h2 v-if="score>90">优秀</h2>
			<h2 v-else-if="score>=80">良好</h2>
			<h2 v-else-if="score>60">及格</h2>
			
			<h2>{{result}}</h2>
		</div>
	</body>
	<script type="text/javascript">
		const app = new Vue({
			el:'#app',
			data:{
				message:'你好',
				score:99
			},
			computed:{
				result(){
					let showMessage = '';
					if (this.score > 90) {
						showMessage = '优秀'
					} else if(this.score >= 80){
						showMessage = '良好'
					}else if(this.score > 60){
						showMessage = '及格'
					}
					return showMessage;
				}
			}
		})
	</script>
</html>
